PHP

Ok, I've been looking around the web for HOURS. I have yet to find anything that says "Drush requires these functions to run." I've seen some stuff that says "system" (I knew that). We're running a pretty tight ship and even though we're using a drush-specific php.ini, I don't just want to open it completely up.

Here is our disable_functions setting in php.ini
disable_functions =passthru,proc_open,popen,curl_multi_exec,parse_ini_file,show_source

Does Drush need any of these? Please...pretty please...someone have a good answer. sigh